我是一名实习生,我正在研究sapui5项目,我想将一些数据显示在unifiedshell中,但它总是“没有数据”,我确信我调用数据的代码是正确的,拜托,我需要帮助 有shell.view.xml
<mvc:View
controllerName="opensap.shell.controller.shell.shell"
xmlns:l="sap.ui.layout"
xmlns:u="sap.ui.unified"
xmlns:mvc="sap.ui.core.mvc"
xmlns:core="sap.ui.core"
xmlns="sap.m"
class="viewPadding">
<u:Shell
id="myShell"
icon="{/logo}">
<u:headItems>
<u:ShellHeadItem
tooltip="Configuration"
icon="sap-icon://menu2"
press="handlePressConfiguration" />
<u:ShellHeadItem
tooltip="Home"
icon="sap-icon://home"
visible="false"
press="handlePressHome" />
</u:headItems>
<u:headEndItems>
<u:ShellHeadItem
icon="sap-icon://log"
tooltip="Logoff"
press="handleLogoffPress" />
</u:headEndItems>
<u:user>
<u:ShellHeadUserItem
image="sap-icon://person-placeholder"
username="Karl Mustermann"
press="handleUserItemPressed" />
</u:user>
<u:search>
<SearchField
search="handleSearchPressed"/>
</u:search>
<u:paneContent>
<List id="product" headerText="Products" items="{/ProductSet}">
<items>
<StandardListItem
title="{ProductID}"
/>
</items>
</List>
</u:paneContent>
</u:Shell>